Air-cleaning machine.



H. s. PJBARNER.

AIR CLEANING MACHINE.

APPLICATION PILED SEPT. 30, 1912.

l v Patented-June 23, 1914.

H. S. F. BARNER.

AIR CLEANING MACHINE.

APPLICATION FILED SEPT. 30, 1912.

Patented June 23, 1914J 2 SHEETS-SHEET 2.

m1/Wenko@ .lLEAl-HG MACHINE.

Specification ci Eetters Patent.

Petten-ted June 25%., ri..

Application filed September 89, 1912. Serial No.

T0 all 107mm 'it may concern:

Be it lnow'n that l, HOWARD S. Burnin-, n citizen of the United Sintes, residing ut Allentown, 'in the county of Lehigh und t te of Pennsylvania, have invented certain new `ind useful improvements in Air- Cleon'ing lvschines; und do declare the following to oc s full, clear, and exact description of the invention, such as will enuble others skilled in the art to which it oppertoins to nickc und use the saine. Y

This in\;enti:on relates Yto ineens Jor ei;- tracting dirt and dust from air by forced draft, and `more especially it is un improvenient in the dust beg; usually en'ipioycd in n. vccuuin cleaner, end the ports enacting with said bag.

.The object of the invention is to provide ineens for :iutonintcully and periodically emptying seid bag of its contents, discharging the sinne into u suitable recentsclc.

Another object is to improve the construction of the suction and cleaning` mechanism for drawing' the dusteladen .cir into scid bag und extractingthe nir from the dust Within the bug and liltering it as it were so as to leave only the dust und dirt therein.

lilith these and other objects in view, the invention consists of certain novel features of construct on und combination and ci rangement of p s as will. be more fully described and cle ed.

In the cconionnying drsvring's; Figure l is n central vertical longitudinal section through o. street sweeping niuchine with my invention et thereto. F E is a. vertical cross section token on the line 2-2 oi' Fig. i. Fig. is entrai longitudinal scction of the suction chamber ol the innchine. l? i is r. vertical cross section ci the sonic teken on c. line ci Fi 3. Fig. o is simil-or vien* token on the line 5 5 or" Fig'.

The mechanism comprising the gist ci the present invention may cd' course be applied in s number oi Ways and to c variety oi machines; but in this pecicction have described it as connected With tie inner end of n. dusJ abe which 'forms ps' of e street Mb cleaning;l innchine, the other end of sold tube huvino" :i suction heed which piel/s up the dirt l'roni the street or roadway contiguous to n brush. T o' ever, l do not Wish to be confined to tins Lict npnlicrticn be irvention, it is o be use in other we g cttached the street cleaning machine illstruted inov bc carried by any suitable form of truck and is here sho'vvn as being mount-cd on the frame l'of o motor vehicle. 'The traine is supported on front Wheels@ and rear Wheels 3, seid rear wheels being lined on adriving axle l having sprocket gears 5 connected by sprocket chains 6, with sprocket `oinions 7 on c' countershaiit 8 mounted in suitable bearings on thefrarne lof the machine. @n the freine 1 preferably et the forward end of the machine is arranged e. suitable motor S having; a. drive shaft l() that extends rearwardly and is connected at its rear end by suitable gears with the counten shaft 8.

Revolubly mounted in suitable hangers l iis s cylindrical brush l2 preferably disposed it a short distance from and in front or' the rear Wheels g' and said brush is connected with the driving mechanism of the vehicle in tiny suitable manner so that it Will be driven in the proper direction when the machine is prfopelled and may be thrown out of gear et the will of the operator.

in order to collect ythe dirt swept up by the brush 12, provide o suitable suction head comprising' c dustpsn or tray 22, Which is provided with o. hood 23 and is connected with the llower end of s. dirt conducting tube 2i which entends upwardly through the door the vehicle and has its upper end turned ldovvnivardiy und connected with eor oir-filteringl bag dust-collecting receptacle The bag 2 is arranged in en nir suction cylinder 2 which is suitably supported in the body of the vehicle and to which niid- Way betivc .i its ends is connected the upper end of the dirt-conducting tube 24, the bag Q5 also being secured to this end of .the tube 2li as hereinafter described. The beg 25 when thus arranged extends transverselyv through the cylinder 2G and has its opposite end connected with :t discharge open- .ng in side oi3 said cylinder. This openig is provided with n. trop door 27 which s adapted to automatically open When the .one is filled with dirt and to automatically close after the dirt has been discharged from the bog. The dirt, when discharged from the bog through the opening in the cylinder, falls into the body 28 of the vehicle, which constitutes the receptacle provided to receive the sonic.

The cvlinder 26 is divided .by transverse partitions 29 into a central compartment 30 and end compartments or suction chambers 3l. rllhe partitions 29 are preferably convened toward the contrai chamber 30 of the cylinder and are provided with a plurality of air holes 32, which are covered by a line mesh Wire nettiirg-and` provided with outwardly opening check valves 32a as shown. Suitable air outlets are also provided in the cylinder wall, opening from the end compartments 3l of the cylinder. Arranged in the suction chambers or compartments 31 are suction pistons 33 having piston rods 34 which project outwardly through the ends of the cylinder and are connected with operating levers 35. The levers are pivotally secured at their lower ends to the frame or body of the vehicle adjacent to the opposite ends of the cylinder 26 and are connected at their upper ends by a connect ing rod 36. The rod 36 is provided with al right angular arm 37 which is operatively connected by a pitman rod 38 to a crank dist: 39 on the end of a piston operating shaft 4&0 which is mounted in suitable bearings on the 4frame of the machine. Loosely mounted on the opposite end of the shaft 40 is a beveledgear il which is engaged with and driven by a beveled gear 42 :tired on one end of a. power transmitting shaft i3 which is mounted in suitable bearings be-` neath the body of the vehicle and is connected to the drive shaft 10 ofthe motor by beveled gears 1 -l and 45 as shown. The gear el is operatively connected to the shaift 40 by a clutch one member i6 of which is 'formed on or secured to the gear 41. and the other member l? of which is slidably keyed to the shaft 40 and is adapted to be shifted into and out of engagement with the meinber 46 by a suitable clutch shifting lever. By thus constructing and arranging the air suction mechanism. itl will be seen that when the clutch member 47 is thrown into engagement with the clutch member 46 of the gear il the pistons 33 will be operated in the suction chambers 31 of the cylinder QG and will thus create a suction through the tube and the suction head, thereby drawing the dirt up said tube and into the dust bag 25. The dust and dirt, when thus drawn into the bag 25, Will be retained therein *while the air is drawn and liltered through the sides oi the bag and is discharged through the check valves of the cylinder.

rIlle trap door 27 is fastened in closed position. by an automaticallypperated catch comprising a latch bolt 50 which is slidglibiy mounted in a keeper 5l secured to the (side ot the cvlinder adjacent to thelower edge ot the oor. The outer end ofthe bolt is bei eled s o that the same is pushed back by the odge of the door when swung to a closed osition. As soon as the door is closed the oit in a ain projected and engaged with the door y a suitable spring 52 as shown.

The door Q'i'is provided with a suitable spring hinge 53 whereby the same is swung to a ciosed position after being opened to discharge the contents of the filtering bag.

The latch. bolt 50 lis automaticaly retracted to .release the door., by means of a bell crank lever 54e which is pivotally against which the dirt accumulating in the i bag will press. By thus constructing and arranging the bolt releasing mechanism it will be seen that when the dirt has accumulated in the bag to exert sufficient pressure on the plate 58 ot thehell crank lever and on the door, the bell crank lever will be rocked thus retracting the holt against the tension of the spring a2. Said pressure will then open the door, thereby permitting the escape of the contents oity tmbag into the body 'ot the vehicle which terms the reeep tacle for the dirt. After the dirt has been discharged in this manner the spring hinge will swing the door back and together with the suction through the discharge opening in the cylinder Will close the door. Vihen thus closed the latch bolt Will spring into engagement with 'the door and hold the same closed until the lteting bag is again lilled.

lVhile the pistons 33 in. the suction chainbers 31 of the cylinder 26 may be or? any suitable construction the same are here shown and are preferably in the of flexible partitions or diaphragms which are. forced inwardly and. outwardly by piston rods 34e in the manner described.

From the foregoing description tation in connection with the accompanying dra ings, the construction and operation the invention wiil be readiiy understood withu out requiring more extended explanation.

"Various changes inthe form, proportion and the minordetailsjoft construction may be resorted to Without departing ilrm the principio or sacriiicing any oit the'advantages oi' the invention, as ciairned.

Having thus described my invention, *what Tilt 2. The combination with a receptacle, and a door normally closing its outlet end; of

means for latchingr said door when it is Closed, a platewithin said receptacle near its outlet end, and operating connections between said plate and latehing means for retracting the latter when said plate is moved by the pressure of accumulated material Within said receptacle.

3. The combination with a tube, and a door hingedly connected therewith for closing its outlet end; of means for latching the door when closed, and a bell-crank lever pivotally supported and having one arm projecting across the interior thereof and adapted to be actuated by the pressure of material Within said tube and the other arm conneeted with said latchingl means, for -the purpose set forth. l

4. The combination With a tube having a slot in one side near its outlet end, and a door hingedly connected with the other side of said tube at its outlet end; of a bell-crank lever having one arm projecting through latehing means for thefree edge of the door,

the other arm of said lever being connected with said means, for the purpose set forth.4

5. The combination With a receptacle having an outlet at. its lower end and a slot in one side near said outlet, a door adapted to Close said outlet, and a spring hinge for closing the door of aspring-actuated bolt for engagingthe free edge of the door, and a bell-crank lever pivotally supported at its angle and' having one arm projecting through said slot into the interior of said 1reeeptaele and the other arm-connected With said latch.

In testimony whereof I have hereunto set my hand in presence of two subscribing Witnesses.

HOWARD S. F. BARNER. lVitnesses:

MARY ODonfNnLL, RALPH H. SCHATZ. 

